As an end-user, you might find WordPress ridiculously slow sometimes, not because WordPress itself is slow, but rather the way you're using WordPress is not optimized. That's why speeding up WordPress is a topic that can never get old. Mashable talked about it more than a year ago, Noupe has recently published an article about it, and even a design magazine blog has done the same thing.

In WordPress, url_to_postid is a magic function that helps you convert certain URLs to IDs. However, it is limited to built-in post types. This tip will show you how to quickly make url_to_postid work with WordPress custom post types.... more

A WordPress constant is simply a variable that can not be changed once it is defined. As static as a constant is, it still plays an important role in controlling how your WordPress works.

If you are asked to name some WordPress constants, it would not be a surprise if you mention ones like WP_DEBUG, ABSPATH, or WP_LANG, because they are somewhat widely used. In this article, I will list and explain other... more